参考文档:
Preventing Image 'Theft' By: Ken Coar
Preventing hot linking of images by JavaScript Kit
SetEnvIfNoCase 和 SetEnvIf 的说明文档
http://httpd.apache.org/docs-2.0/mod/mod_setenvif.html#setenvif
httpd.conf 的修改处
######## Preventing Image 'Theft' ########
SetEnvIfNoCase Referer “^http://(.)+.fjhr.com/” local_ref=1
SetEnvIfNoCase Referer “^http://(.)+.hzmjp.com/” local_ref=1
SetEnvIfNoCase Referer “^http://(.)+.dalouis.com/” local_ref=1
SetEnvIfNoCase Referer “^http://(.)+.necktie.gov.cn/” local_ref=1
SetEnvIfNoCase Referer “^http://(.)+.necktie.net.cn/” local_ref=1
SetEnvIfNoCase Referer “-” local_ref=1
######## Allow the LOGO image Theft ##########
SetEnvIf Request_URI “/images/logo(.)+” local_ref=0
Order Allow,Deny
Allow from env=local_ref